|
Problem IC61668
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Status: Closed |
BUFFER POOL RESIZE DURING OPERATIONS ON MDC TABLE MAY CAUSE UNPREDICTABLE RESULTS |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
If a lock escalation occurs during processing to find a free
block, and the block map page moves to a new memory location due
to a buffer pool resize operation at the same time, then the
wrong address in memory may be referenced, resulting in
unpredictable results, such as reusing an already-inuse block,
rows inserted into the wrong block, or duplicate block IDs. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users of MDC tables *
****************************************************************
* PROBLEM DESCRIPTION: *
* If a lock escalation occurs during an MDC operation, and the *
* underlying buffer pool is resized at the same time, *
* unpredictable errors may occur. See the APAR description *
* for full details. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to the latest fix pack. *
**************************************************************** |
| Local Fix: |
Avoid resizing the buffer pool while performing operations on
MCD tables. |
| available fix packs: |
DB2 Version 9.7 Fix Pack 1 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
First fixed in DB2 UDB Version 9.7 fix pack 1. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 23.06.2009
05.01.2010
05.01.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP1
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.1
|
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